1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisabon 2012 [21]
3 years ago
5

Four multiple choice science questions.

Physics
2 answers:
mixas84 [53]3 years ago
7 0
A
c
a
c
just from memory hope this helps

Sati [7]3 years ago
4 0
1. Jupiter (being the largest planet and all)
2. Ice and Rock
3. None of the above
4. Uranus
You might be interested in
When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV1.4=C
DiKsa [7]

Answer:

\frac{dV}{dt}=21.21cm^3/min

Explanation:

We are given that

PV^{1.4}=C

Where C=Constant

\frac{dP}{dt}=-7KPa/minute

V=420 cubic cm and P=99KPa

We have to find the rate at which the  volume increasing at this instant.

Differentiate w.r.t t

V^{1.4}\frac{dP}{dt}+1.4V^{0.4}P\frac{dV}{dt}=0

Substitute the values

(420)^{1.4}\times (-7)+1.4(420)^{0.4}(99)\frac{dV}{dt}=0

1.4(420)^{0.4}(99)\frac{dV}{dt}=(420)^{1.4}\times (7)

\frac{dV}{dt}=\frac{(420)^{1.4}\times (7)}{1.4(420)^{0.4}(99)}

\frac{dV}{dt}=21.21cm^3/min

5 0
3 years ago
Read 2 more answers
Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example
nlexa [21]

Answer:

The maximum emf that can be generated around the perimeter of a cell in this field is 1.5732*10^{-11}V

Explanation:

To solve this problem it is necessary to apply the concepts on maximum electromotive force.

For definition we know that

\epsilon_{max} = NBA\omega

Where,

N= Number of turns of the coil

B = Magnetic field

\omega = Angular velocity

A = Cross-sectional Area

Angular velocity according kinematics equations is:

\omega = 2\pi f

\omega = 2\pi*61.5

\omega =123\pi rad/s

Replacing at the equation our values given we have that

\epsilon_{max} = NBA\omega

\epsilon_{max} = NB(\pi (\frac{d}{2})^2)\omega

\epsilon_{max} = (1)(1*10^{-3})(\pi (\frac{7.2*10^{-6}}{2})^2)(123\pi)

\epsilon_{max} = 1.5732*10^{-11}V

Therefore the maximum emf that can be generated around the perimeter of a cell in this field is 1.5732*10^{-11}V

6 0
3 years ago
A car drives around a horizontal, circular track at constant speed. Consider the following three forces that act on the car: (1)
DiKsa [7]

idksbabgdsamh vjd,hba sh,gdk,h agshcg dhbmbkdgh ,mhfcdgs m,hdfgs kjhab ckjmhasb mhfcg asd,gbcfjkde qwhsfjasdhnf bkhjsadhgc kbasdhkfkiu ae jhbdkghaw gds hgu jidksbabgdsamh vjd,hba sh,gdk,h agshcg dhbmbkdgh ,mhfcdgs m,hdfgs kjhab ckjmhasb mhfcg asd,gbcfjkde qwhsfjasdhnf bkhjsadhgc kbasdhkfkiu ae jhbdkghaw gds hgu jidksbabgdsamh vjd,hba sh,gdk,h agshcg dhbmbkdgh ,mhfcdgs m,hdfgs kjhab ckjmhasb mhfcg asd,gbcfjkde qwhsfjasdhnf bkhjsadhgc kbasdhkfkiu ae jhbdkghaw gds hgu jidksbabgdsamh vjd,hba sh,gdk,h agshcg dhbmbkdgh ,mhfcdgs m,hdfgs kjhab ckjmhasb mhfcg asd,gbcfjkde qwhsfjasdhnf bkhjsadhgc kbasdhkfkiu ae jhbdkghaw gds hgu j

8 0
2 years ago
What is the momentum of a 546,540 kg train that is travelling at 7.8 m/s​
lara [203]

p=mv so wouldn't u multiply them?

8 0
2 years ago
Mathew throws a ball straight up in the air. it rises for a period of time and then begins to drop. At which points in the balls
Allushta [10]

Answer:   The greatest force of gravity on the ball will occur at the point when the ball is near to hit the ground ... hope this helps have a good day :P

3 0
2 years ago
Other questions:
  • Water ia boled at 1 at pressure in a coffe aker equpped with an immension-type electric heating element. The coffee maker intial
    10·1 answer
  • What mass of a material with density rho is required to make a hollow spherical shell having inner radius r1 and outer radius r2
    7·1 answer
  • ________is what causes acceleration. Two forces acting opposite each other.
    13·1 answer
  • Human muscles have an efficiency of about __________. A. 9 to 17% B. 18 to 26% C. 27 to 35% D. 36 to 44%
    7·2 answers
  • Why do scientists believe that light is made of waves?
    14·1 answer
  • Conservation of energy
    15·1 answer
  • A string attached to a kite was maintained at an angle of 65.0° with the ground. If 120 m of string was reeled in to return the
    8·1 answer
  • 100 cm = 1 m, 9750 cm ?__m 11​
    14·1 answer
  • Read no.4<br><br> which newtons law is this?<br><br> 1,2 and 3 only
    13·1 answer
  • 2. What would be the effect on your body if you did not have kidneys? Page
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!